26 lines
1023 B
SQL
26 lines
1023 B
SQL
-- One-time migration: move scad_deadlines.category into dedicated scad_subjects table
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CREATE TABLE IF NOT EXISTS scad_subjects (
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id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
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name VARCHAR(100) NOT NULL,
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color VARCHAR(7) NOT NULL DEFAULT '#6c757d',
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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UNIQUE KEY uniq_name (name)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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INSERT IGNORE INTO scad_subjects (name)
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SELECT DISTINCT TRIM(category) FROM scad_deadlines
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WHERE category IS NOT NULL AND TRIM(category) <> '';
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ALTER TABLE scad_deadlines
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ADD COLUMN subject_id INT UNSIGNED NULL AFTER id,
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ADD INDEX idx_subject (subject_id),
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ADD CONSTRAINT fk_deadlines_subject FOREIGN KEY (subject_id) REFERENCES scad_subjects(id) ON DELETE SET NULL;
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UPDATE scad_deadlines d
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JOIN scad_subjects s ON s.name = TRIM(d.category)
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SET d.subject_id = s.id;
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ALTER TABLE scad_deadlines DROP COLUMN category;
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